1.Progress of researches on Triatoma rubrofasciata-transmitted trypanosomes
Ziyi WANG ; Yong SHEN ; Lirong HUANG ; Yuanyuan LI ; Di WU ; Qin LIU
Chinese Journal of Schistosomiasis Control 2026;38(2):213-218
Triatoma rubrofasciata is currently the most widely distributed species of Triatoma worldwide, and it is also widespread in southern China. T. rubrofasciata has been proven to transmit Trypanosoma cruzi, and is one of vectors transmitting Chagas disease, which poses a potential risk for transmission of imported Chagas disease in China. Findings from latest studies have shown that T. rubrofasciata naturally infects T. lewisi, T. conorhini, and T. rangeli, which undoubtedly increases significant risks of and challenges to trypanosomiasis control in China. This article briefly describes the species of T. rubrofasciata-transmitted trypanosomes, and summarizes the epidemiological characteristics of trypanosomiasis, so as to provide insights into T. rubrofasciata-transmitted trypanosomiasis surveillance and control, and prevention of trypanosomiasis development and transmission in China.
2.Development and Validation of a High-Performance Liquid Chromatography-Tandem Mass Spectrometry Method for Detecting Adrenocortical Hormones and Establishment of Age-Stratified Reference Intervals in Reproductive-Aged Women from Guangxi, China
Yixuan LIU ; Tingwei JIN ; Yushuang WEI ; Xuelian QIN ; Siyu DENG ; Jie ZHENG ; Boteng YAN ; Yuanyuan NONG ; Yu YE ; Shengzhu HUANG ; Yu LONG ; Jianmin LI ; Ganqin WANG ; Pei HUANG ; Jinghang JIANG ; Fan WU ; Zengnan MO ; Yonghua JIANG
Annals of Laboratory Medicine 2026;46(2):146-154
Background:
Adrenocortical hormones, particularly 11-oxygenated androgens, are pivotal in female reproductive health and fertility. Standardized detection kits and population-specific reference intervals are lacking in China, hindering related clinical applications.
Methods:
A HPLC-tandem mass spectrometry (HPLC-MS/MS) pipeline was developed, rigorously validated, and applied to simultaneously quantify corticosterone, cortisone, cortisol, 18-OH cortisol, androstenedione (A4), 11β-hydroxyandrostenedione (11-OH A4), dehydroepiandrosterone, and dehydroepiandrosterone sulfate in serum samples from 455 reproductive-aged women (18–45 yrs) in Guangxi, China. Age-dependent concentration trends were analyzed, and reference intervals stratified by age (2.5th to 97.5th percentiles) were established. Correlations with body-composition metrics, ethnicity, and the menstrual cycle were investigated.
Results:
The HPLC-MS/MS method demonstrated high precision (intra- and inter-assay CVs < 15%), accuracy, and sensitivity. All eight hormones exhibited significant age-related declines (P < 0.001 for seven hormones; P = 0.001 for 11-OH A4). Notably, 11-OH A4 levels were significantly lower in the 35–45-yr (3.05 nmol/L) and 25–34-yr (3.09 nmol/L) age groups than in the 18–24-yr (3.57 nmol/L) age group, whereas no significant difference was observed between the 35–45-yr and 25–34-yr age groups. Weak negative correlations were observed between the body mass index and corticosterone and cortisone levels, whereas ethnicity and the menstrual cycle showed no significant associations with hormone levels.
Conclusions
We developed an HPLC-MS/MS-based method for simultaneously quantifying eight adrenocortical hormones, including 11-OH A4, and defined age-specific reference intervals for reproductive-aged Chinese women. These findings advance the clinical utility of adrenocortical hormones in diagnosing and managing reproductive disorders.
3.Construction of a prediction model for systemic inflammatory response syndrome in patients undergoing interventional surgery for type B aortic dissection based on logistic regression and decision tree algorithm
Pingzhen ZHANG ; Guiqin WU ; Yuanyuan FU ; Chunyan LIU ; Qiongyan DUAN ; Xiaojing PAN ; Zhouzhen CHEN ; Xia CHEN
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2026;33(07):1085-1092
Objective To construct and compare logistic regression and decision tree models for predicting systemic inflammatory response syndrome (SIRS) in patients with type B aortic dissection (TBAD) after interventional surgery. Methods A retrospective analysis was conducted on clinical data of TBAD patients at Peking University Shenzhen Hospital from 2020 to 2024. The patients were divided into a SIRS group and a non SIRS group based on whether SIRS occurred within 24 hours after surgery. Multivariate logistic regression was used to analyze the influencing factors of SIRS occurrence in TBAD intervention patients, and a decision tree model was constructed using SPSS Modeler to compare the predictive performance of the two models. Results A total of 742 patients with TBAD were included, including 579 males and 163 females, aged 27-97 (58.85±10.79) years. Within 24 hours after intervention, a total of 506 patients developed SIRS, with an incidence rate of 68.19%. Logistic regression analysis showed that the extensive involvement of the dissection, the surgical time≥2 hours, PET coated stents implanted, serum creatinine, white blood cell count, C-reactive protein, monocyte (MONO), neutrophil count levels elevated, estimated glomerular filtration rate and decreased albumin levels were independent risk factors for SIRS (P<0.05). The decision tree model selected a total of 10 explanatory variables and 6 layers with 37 nodes, among which MONO was the most important predictor. The area under the decision tree model curve was 0.829 [95%CI (0.800, 0.856)], which was better than the logistic regression model's 0.690 [95%CI (0.655, 0.723)], and the difference was statistically significant (P<0.001). Conclusion The incidence of SIRS after TBAD intervention is high, and the decision tree model has better predictive performance than logistic regression. It can identify high-risk patients with higher accuracy and provide a practical tool for early clinical intervention.
4.Associations of preconception and prenatal exposures to PM2.5 and its chemical components with risk of large-for-gestational age births
Di WU ; Bo PENG ; Xingyan LIU ; Ya ZHANG ; Zhoupeng REN ; Yuanyuan WANG ; Xu MA
Journal of Environmental and Occupational Medicine 2026;43(6):676-683
Background Large-for-gestational-age (LGA) births are associated with adverse perinatal outcomes and increased risks of offspring obesity, metabolic syndrome, and cardiovascular diseases later in life. Beyond traditional risk factors, exposure to environmental factors, especially fine particulate matter (PM2.5), before and during pregnancy may contribute to excessive fetal growth; however, the roles of specific chemical constituents and critical exposure windows remain unclear. Objective To examine the associations between maternal exposures to PM2.5 and its chemical constituents before and during pregnancy and the risk of delivering LGA infants. Methods Singleton pregnancies from the National Free Preconception Health Examination Project between 2010 and 2014 were included. Individual exposures to PM2.5 and its constituents were estimated for preconception and pregnancy windows using geocoded residential addresses. The associations of single and mixed exposures with LGA risk were analyzed using generalized linear models (GLMs) and qg-computation. Results Exposures to PM2.5 and its major chemical constituents were significantly associated with an increased LGA risk, with differences in effect magnitude across components. Secondary inorganic aerosols showed the strongest associations. For full-pregnancy exposure, nitrate (OR=1.330, 95%CI: 1.313, 1.347), ammonium (OR=1.279, 95%CI: 1.263, 1.295), and sulfate (OR=1.242, 95%CI: 1.227, 1.257) had larger effects on LGA risk than black carbon and organic matter. Analysis by exposure window indicated that the month preceding conception and the third trimester of pregnancy were critical exposure windows for susceptibility, while the strongest effect was observed for full-pregnancy exposure, suggesting a cumulative effect over time. Mixed exposure analysis further showed that nitrate and sulfate consistently accounted for the main positive contributions across different time windows. Conclusion Maternal exposures to PM2.5 and its chemical components before and during pregnancy are associated with an elevated LGA risk. Nitrate and sulfate show consistent and strong associations across pregnancy stages, underscoring the importance of component composition and exposure timing in fetal overgrowth.
5.Luoshi Neiyi Prescription Treats Endometriosis Through TLR4/NF-κB Signaling Pathway
Yuanyuan RUAN ; Sai XU ; Jiangyue TANG ; Xiang LI ; You ZOU ; Fangli PEI ; Lizheng WU ; Kaidi ZHENG ; Shuhong LIN ; Weilan ZHONG ; Cheng ZENG
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(19):185-196
ObjectiveTo investigate the mechanism by which Luoshi Neiyi prescription treats endometriosis (EMs) through the Toll-like receptor 4 (TLR4)/nuclear factor-κB (NF-κB) signaling pathway. MethodsAnimal experiments were conducted with 50 female SD rats, which were randomized into a sham operation group (10 rats) and a modeling group (40 rats). An autologous endometrial transplantation method was used for the modeling of EMs. The 36 successfully modeled rats were randomly allocated into four groups (n=9 each): The model group, the low-dose (7.87 g·kg-1) Luoshi Neiyi prescription group, the high-dose (15.74 g·kg-1) Luoshi Neiyi prescription group, and the dienogest (0.20 mg·kg-1) group. The physiological status and ectopic lesion volumes of rats in each group were observed. Hematoxylin-eosin (HE) staining was used to observe the morphology of the eutopic endometrial tissue. Enzyme-linked immunosorbent assay (ELISA) was employed to measure the levels of inflammatory factors including interleukin-1β (IL-1β) and prostaglandin E2 (PGE2) in the serum of EMs rats. Immunohistochemistry was used to detect the expression of matrix metalloproteinase-9 (MMP-9) and vascular endothelial growth factor A (VEGFA) in the eutopic endometrial tissue. Western blot was adopted to determine the protein levels of TLR4, myeloid differentiation factor 88 (MyD88), phosphorylated nuclear factor-κB (p-NF-κB)/NF-κB, MMP-9, and VEGFA in the eutopic endometrial tissue. In the cell experiments, the cell-counting kit-8 (CCK-8) assay was employed to screen the optimal concentration of Luoshi Neiyi prescription-containing serum, and a scratch assay was performed to assess the migration ability of iheESCs cells. Interventions with Luoshi Neiyi prescription-containing serum, resatorvid (TAK-242, a TLR4 inhibitor), and lipopolysaccharides (LPS, a TLR4 agonist) were conducted, and Western blot was used to detect the expression of proteins related to the TLR4/NF-κB signaling pathway. ResultsThis experiment successfully replicated 36 EMs rat models. Compared with the sham operation group, the model group exhibited visible ectopic lesions on the abdominal wall and an increase in the writhing response score (P<0.01). Furthermore, HE staining revealed the model group exhibited a thickened eutopic epithelium, stromal cell disarrangement, and evident infiltration of inflammatory cells. In addition, the model group showed elevated serum levels of IL-1β and PGE2 (P<0.05, P<0.01), increased positive expression of MMP-9 and VEGFA in the ectopic endometrial tissue (P<0.01), and up-regulated protein levels of TLR4, MyD88, p-NF-κB/NF-κB, MMP-9, and VEGFA in the ectopic endometrial tissue (P<0.05, P<0.01). Compared with the model group, all treatment groups exhibited a reduction in the ectopic lesion volume (P<0.01). Furthermore, the writhing response scores were decreased in the high-dose Luoshi Neiyi prescription group and the dienogest group (P<0.05, P<0.01). The pathological state of the ectopic endometrial tissue was alleviated to varying degrees in the treatment groups. Low-dose Luoshi Neiyi prescription reduced serum PGE2 levels, and high-dose Luoshi Neiyi prescription and dienogest decreased serum IL-1β and PGE2 levels in EMs rats (P<0.05, P<0.01). The treatment groups showed decreased positive expression of MMP-9 and VEGFA in the ectopic endometrial tissue (P<0.05, P<0.01) and down-regulated protein levels of TLR4, MyD88, p-NF-κB/NF-κB, MMP-9, and VEGFA in the ectopic endometrial tissue (P<0.05, P<0.01). The cell experiments showed that 5%, 10%, and 20% Luoshi Neiyi prescription-containing sera significantly reduced the viability and inhibited the migration of iheESCs. Compared with the control group, 5%, 10%, and 20% Luoshi Neiyi prescription-containing serum groups and the TAK-242 group showed reduced protein levels of TLR4, MyD88, p-NF-κB/NF-κB, MMP-9, and VEGFA (P<0.01). Compared with the control group, the LPS group showed increased expression of the above proteins (P<0.01). Compared with the LPS group, the LPS+5%, 10%, and 20% Luoshi Neiyi prescription-containing serum groups showed reduced expression of the above proteins (P<0.05, P<0.01). ConclusionLuoshi Neiyi prescription may modulate the TLR4/NF-κB signaling pathway to reduce the inflammatory response and histopathological damage in the eutopic endometrium and suppress the adhesive, invasive, and angiogenic biological processes in the ectopic endometrial tissue, thereby exerting its therapeutic effect on EMs.
6.Research progress in novel drug delivery systems of breviscapine
Yuchuan CHENG ; Weize LI ; Ning LI ; Yuanyuan LI ; Ruixia KANG ; Dan WU
China Pharmacy 2026;37(17):2338-2343
Breviscapine (Bre), the effective flavonoid fraction extracted from Erigeron breviscapus , contains more than 90% scutellarin. It exerts pharmacological effects including cardiovascular protection, neuroprotection, anti-tumor activity and immunomodulation. Nevertheless, Bre has several drawbacks such as low solubility, low permeability, poor stability and short half-life, which greatly restrict its clinical application. Novel drug delivery systems (NDDS) are carriers that integrate multi-dimensional technologies including solubilization, penetration enhancement, sustained/controlled release and targeted delivery to achieve efficient drug delivery. This paper systematically summarizes the research progress of Bre-NDDS, which mainly covers oral preparations (sustained/controlled-release drug delivery systems, immediate-release drug delivery systems), injectable preparations (liposomes, solid lipid nanoparticles, lipid emulsions, polymeric nanoparticles, polymeric micelles), mucosal delivery systems (nasal mucosal drug delivery systems, buccal mucosal drug delivery systems, pulmonary mucosal drug delivery systems) and transdermal delivery systems. The preparation routes as well as in vitro and in vivo performances of various Bre-NDDS are analyzed. The design principles for NDDS based on pharmacokinetics/pharmacodynamics are put forward, which can provide scientific evidence for the research, development and industrialization of high-efficiency and safe new Bre preparations.
7.Neutrophil activation is correlated with acute kidney injury after cardiac surgery under cardiopulmonary bypass
Tingting WANG ; Yuanyuan YAO ; Jiayi SUN ; Juan WU ; Xinyi LIAO ; Wentong MENG ; Min YAN ; Lei DU ; Jiyue XIONG
Chinese Journal of Blood Transfusion 2025;38(3):358-367
[Objective] To explore the relationship between neutrophil activation under cardiopulmonary bypass (CPB) and the incidence of cardiac surgery-associated acute kidney injury (CS-AKI). [Methods] This prospective cohort study enrolled adult patients who scheduled for cardiac surgery under CPB at West China Hospital between May 1, 2022 and March 31, 2023. The primary outcome was acute kidney injury (AKI). Blood samples (5 mL) were obtained from the central vein before surgery, at rewarming, at the end of CPB, and 24 hours after surgery. Neutrophils were labeled with CD11b, CD54 and other markers. To assess the effect of neutrophils activation on AKI, propensity score matching (PSM) was employed to equilibrate covariates between the groups. [Results] A total of 120 patients included into the study, and 17 (14.2%) developed AKI. Both CD11b+ and CD54+ neutrophils significantly increased during the rewarming phase and the increases were kept until 24 hours after surgery. During rewarming, the numbers of CD11b+ neutrophils were significantly higher in AKI compared to non-AKI (4.71×109/L vs 3.31×109/L, Z=-2.14, P<0.05). Similarly, the CD54+ neutrophils counts were also significantly higher in AKI than in non-AKI before surgery (2.75×109/L vs 1.79×109/L, Z=-2.99, P<0.05), during rewarming (3.12×109/L vs 1.62×109/L, Z=-4.34, P<0.05), and at the end of CPB (4.28×109/L vs 2.14×109/L, Z=-3.91, P<0.05). An analysis of 32 matched patients (16 in each group) revealed that CD11b+ and CD54+ neutrophil levels of AKI were 1.74 folds (4.83×109/L vs 2.77×109/L, Z=-2.72, P<0.05) and 2.34 folds (3.32×109/L vs 1.42×109/L, Z=-4.12, P<0.05), respectively, of non-AKI at rewarming phase. [Conclusion] Neutrophils are activated during CPB, and they can be identified by CD11b/CD54 markers. The activated neutrophils of AKI patients are approximately 2 folds of non-AKI during the rewarming phase, with disparity reached peak between groups during rewarming. These findings suggest the removal of 50% of activated neutrophils during the rewarming phase may be effective to reduce the risk of AKI.
8.Rho/ROCK:key Mediator of Pulmonary Fibrosis and New Target of TCM for IPF Prevention and Treatment
Yuanyuan WU ; Kangchen LI ; Mingyan LI ; Xiling PENG ; Feifan ZHANG ; Han LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(4):256-265
Idiopathic pulmonary fibrosis (IPF) is a chronic interstitial lung disease characterized by dyspnea and progressive deterioration of lung function, which significantly impacts patients' quality of life and imposes a major burden on society. Although modern medicine has increasingly enriched the treatment options for pulmonary fibrosis, unfavorable factors such as high costs and significant side effects contribute to the persistently low survival rate of patients. Studies have shown that the occurrence and development of pulmonary fibrosis are closely related to abnormalities in multiple pathways. Among these, Rho/Rho-associated coiled-coil protein kinase (ROCK) plays a key role in the disease progression of IPF by regulating the cytoskeleton. This pathway not only transmits biochemical molecular signals that promote the progress of fibrosis but also responds to the biomechanical environment, such as the increased lung tissue stiffness caused by the deposition of extracellular matrix (ECM) during the process of pulmonary fibrosis. Therefore, research on this pathway is of great significance for the prevention and treatment of IPF. In recent years, traditional Chinese medicine (TCM) has shown remarkable effects in preventing and treating IPF. Many TCM compounds and active components can reduce the production of α-smooth muscle actin (α-SMA), CollagenⅠ (ColⅠ), ColⅢ, and inflammatory factors in lung tissue by regulating the Rho/ROCK signaling pathway. These compounds inhibit the transformation of fibroblasts (FBs) into myofibroblasts (MyoFBs), intervening in the process of pulmonary fibrosis. Based on this, the article briefly reviews relevant research from recent years, discusses the key role of the Rho/ROCK pathway in pulmonary fibrosis from an interdisciplinary perspective, and summarizes the mechanisms through which TCM regulates Rho/ROCK to prevent and treat IPF, based on resources from PubMed, CNKI, and other databases, in order to provide important references for the broader clinical application of TCM in the prevention and treatment of IPF.
9.Best evidence summary for diaphragm rehabilitation in ICU patients with mechanical ventilation
Dong XIANG ; Yuanyuan MI ; Wei WU ; Xiaojie WU ; Zhuoya ZHANG ; Jun LEI ; Yuanting HE ; Haiyan HUANG
Chongqing Medicine 2025;54(7):1679-1685,1692
Objective To summarize the best evidence for diaphragm rehabilitation in mechanically ven-tilated ICU patients with ventilator-associated diaphragm dysfunction based on evidence-based methods.Meth-ods A systematic search was conducted across guideline websites,professional associations,and Chinese/English databases for evidence regarding diaphragm rehabilitation in mechanically ventilated ICU patients.The search timeframe spanned from database inception to December 31,2024.Two researchers independently per-formed quality assessment and synthesized the evidence.Results Twenty articles were included:2 clinical de-cisions,1 guideline,2 evidence summaries,3 systematic reviews,7 randomized controlled trials(RCT),and 5 expert consensuses/opinions.Twenty-seven pieces of evidence were formed across 6 themes:rehabilitation team,rehabilitation assessment,rehabilitation interventions,outcome evaluation,precautions,and education/training.Conclusion This study summarizes the best evidence for diaphragm rehabilitation in ICU mechani-cally ventilated patients.Healthcare professionals should implement diaphragm rehabilitation by integrating this evidence with specific clinical contexts to improve patient outcomes and enhance nursing quality.
10.Verification study on the application value of ProMisE molecular typing in the prognosis evaluation of endometrial cancer
Yuanyuan YONG ; Tiaotiao YONG ; Lixian WU
Chongqing Medicine 2025;54(8):1877-1882
Objective To explore the application value of the prospective molecular classification tool(ProMisE)molecular typing for endometrial cancer in the prognosis assessment.Methods A retrospective a-nalysis was conducted on the clinical data of 150 patients with endometrial cancer admitted to the General Hospital of Ningxia Medical University.The patients were divided into 4 groups according to ProMisE molec-ular typing:DNA polymerase ε(POLE)mutant type,mismatch repair protein(MMR-d)type,p53 wild type(p53wt type)and p53 mutant type(p53abn type)were compared.The clinicopathological characteristics,treatment regimens and prognosis of patients in each group were compared.Results Endometrial cancer pa-tients with different ProMisE molecular subtypes showed differences in age,tumor histological type,depth of myometrial invasion,lymph node metastasis,etc.,and the differences were statistically significant(P<0.05).Patients with POLE mutations are younger,have a better degree of tumor differentiation,and have the best prognosis.Patients with p53abn type have a relatively advanced tumor stage and the poorest prognosis.The prognosis of patients with MMR-d type and p53wt type lies between the two.Conclusion ProMisE mo-lecular typing can provide an important basis for the prognosis assessment of patients with endometrial cancer and is helpful for formulating individualized and precise treatment plans.

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